Nonprofits in Connecticut

Nonprofits in Connecticut. Browse 26,993 public nonprofit profiles. Review organization identities, available filing years, and their complete CharitySense profiles.

Location refers to headquarters recorded in public sources, not an organization’s service area. Classification describes its reported category and does not assess its effectiveness.

Nonprofit profiles

  1. St Thomass Day School Foundation Inc

    EIN 461472119 · Headquarters: NEW HAVEN, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  2. St Vincent De Paul Place Norwich Inc

    EIN 371639042 · Headquarters: NORWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  3. St Vincent De Paul Society Saint James Conference Incorporated

    EIN 061444945 · Headquarters: Manchester, CT, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  4. St Vincent De Paul Society St Margaret Mary Church

    EIN 383795529 · Headquarters: South Windsor, CT, US · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  5. St Vincent Depaul Middletown

    EIN 061387081 · Headquarters: MIDDLETOWN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  6. St Vincent DePaul Mission of Bristol Inc

    EIN 222478902 · Headquarters: BRISTOL, CT, USA · Housing & Shelter · Latest available filing year: 2024 · Primary form: IRS Form 990

  7. St Vincent Depaul Mission of Waterbury

    EIN 061001527 · Headquarters: WATERBURY, CT, USA · Mental Health & Crisis Intervention · Latest available filing year: 2024 · Primary form: IRS Form 990

  8. St Vincent Depaul of the Valley Inc

    EIN 061315760 · Headquarters: DERBY, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  9. St Vincent Depaul Society of St Bridget Church

    EIN 320303248 · Headquarters: Manchester, CT, US · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  10. St Vincent's Development Inc

    EIN 222554128 · Headquarters: Trumbull, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  11. St Vincent's Health Services Corp

    EIN 222558134 · Headquarters: Bridgeport, CT, USA · Health Care · Latest available filing year: 2023 · Primary form: IRS Form 990

  12. St Vincent's Medical Center Foundation Inc

    EIN 222558132 · Headquarters: Bridgeport, CT, USA · Health Care · Latest available filing year: 2023 · Primary form: IRS Form 990

  13. St Vincent's Multispecialty Group Inc

    EIN 800458769 · Headquarters: Bridgeport, CT, USA · Health Care · Latest available filing year: 2023 · Primary form: IRS Form 990

  14. St Vincent's Special Needs Center Inc

    EIN 060702617 · Headquarters: Trumbull, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  15. St. Luke's School

    EIN 237099149 · Headquarters: New Canaan, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  16. St. Paul's Child Development Center

    EIN 273543896 · Headquarters: Bridgeport, CT, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  17. Stable Grounds Therapeutic Farm Sanctuary

    EIN 874556467 · Headquarters: New Haven, CT, US · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. Stac Co

    EIN 990590458 · Headquarters: Salisbury, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  19. Stadley Rough Parent-teachers Organization

    EIN 223098245 · Headquarters: Danbury, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  20. Staff Retirement Holdings Inc

    EIN 061559156 · Headquarters: New Haven, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  21. Staff Union of Connecticut

    EIN 061079875 · Headquarters: Rocky HIll, CT, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  22. Staffing Management Association of Southern New England Inc

    EIN 562556631 · Headquarters: East Berlin, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Stafford Administrators Association

    EIN 471129234 · Headquarters: Stafford Springs, CT, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  24. Stafford Affordable Housing Nonprofit

    EIN 473379783 · Headquarters: STAFFORD SPRINGS, CT, USA · Housing & Shelter · Latest available filing year: 2025 · Primary form: IRS Form 990

  25. Stafford Ambulance Association Inc

    EIN 061184671 · Headquarters: Stafford Springs, CT, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990

  26. Stafford Baseball Academy

    EIN 333666538 · Headquarters: Stafford Springs, CT, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. Stafford Boys Club Inc

    EIN 066045404 · Headquarters: STAFFORD SPRINGS, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Stafford Bulldogs Youth Football

    EIN 061497855 · Headquarters: STAFFORD SPRINGS, CT, USA · Recreation & Sports · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  29. Stafford Elementary School Pto Inc

    EIN 205202854 · Headquarters: BRISTOL, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  30. Stafford Fire Dept No 1 Inc

    EIN 066047764 · Headquarters: Staffordville, CT, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2024 · Primary form: IRS Form 990

  31. Stafford Fish & Game Club Inc

    EIN 061098547 · Headquarters: STAFFORD SPRINGS, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  32. Stafford High School Athletic Booster Club

    EIN 992432353 · Headquarters: Stafford Springs, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  33. Stafford Library Association

    EIN 060646908 · Headquarters: STAFFORD SPRINGS, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  34. Stafford Little League Inc

    EIN 061386743 · Headquarters: STAFFORD SPRINGS, CT, USA · Recreation & Sports · Latest available filing year: 2010 · Primary form: IRS Form 990-EZ

  35. Stafford Seniors Association Inc

    EIN 262569965 · Headquarters: Stafford Springs, CT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. Stafford Springs Boxing Club

    EIN 320261618 · Headquarters: Stafford, CT, US · Recreation & Sports · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  37. Stafford Springs Cemetery Assoc

    EIN 060546385 · Headquarters: Pomfret Center, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  38. Stafford Youth Softball League Inc

    EIN 061320812 · Headquarters: stafford springs, CT, US · Recreation & Sports · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  39. Staffordville Pto

    EIN 823182642 · Headquarters: Stafford Springs, CT, US · Education · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  40. Stage 1 Cycling Club Inc

    EIN 822811687 · Headquarters: Simsbury, CT, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. Stagehands Benevolent Association Local 84

    EIN 510586464 · Headquarters: Glastonbury, CT, US · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Staiano Foundation Revocable Trust Agreement

    EIN 516528959 · Headquarters: farmington, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2015 · Primary form: IRS Form 990-PF

  43. Staje Productions

    EIN 394799577 · Headquarters: Brookfield, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. Stamford Academy Inc

    EIN 770641722 · Headquarters: STAMFORD, CT, US · Education · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  45. Stamford Achieves Inc

    EIN 201727241 · Headquarters: Stamford, CT, USA · Education · Latest available filing year: 2012 · Primary form: IRS Form 990

  46. Stamford Administrative Unit

    EIN 222487581 · Headquarters: STAMFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  47. Stamford Affordable Homes Inc

    EIN 061602448 · Headquarters: STAMFORD, CT, USA · Housing & Shelter · Latest available filing year: 2024 · Primary form: IRS Form 990

  48. Stamford Alumni Foundation Inc

    EIN 050522640 · Headquarters: Stamford, CT, US · Education · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  49. Stamford Amateur Radio Association Incorporated

    EIN 222511899 · Headquarters: Stamford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. Stamford Animal Shelter Alliance Inc

    EIN 300861425 · Headquarters: STAMFORD, CT, US · Animal Related · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  51. Stamford Art Association Inc

    EIN 237111511 · Headquarters: Stamford, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  52. Stamford Board of Education Employees Association

    EIN 061618293 · Headquarters: STAMFORD, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  53. Stamford Board of Realtors Inc

    EIN 060795109 · Headquarters: STAMFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  54. Stamford Catholic High School Fund Inc

    EIN 237191746 · Headquarters: Bridgeport, CT, US · Education · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  55. Stamford Center for the Arts Inc

    EIN 061048684 · Headquarters: STAMFORD, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  56. Stamford Chamber of Commerce Inc

    EIN 222506549 · Headquarters: STAMFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  57. Stamford Charter School for Excellence

    EIN 472465564 · Headquarters: STAMFORD, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  58. Stamford Chevra Kadisha Inc

    EIN 812443465 · Headquarters: Stamford, CT, US · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  59. Stamford Chorale Inc

    EIN 421566430 · Headquarters: Stamford, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  60. Stamford Counseling Center Inc

    EIN 061632114 · Headquarters: STAMFORD, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2018 · Primary form: IRS Form 990

  61. Stamford Cross Road Residences Inc

    EIN 222538947 · Headquarters: NORTH HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  62. Stamford Cultural Development Corporation

    EIN 061525220 · Headquarters: STAMFORD, CT, US · Arts, Culture & Humanities · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  63. Stamford Denmark Friendship Committee Inc

    EIN 472298033 · Headquarters: Stamford, CT, US · Arts, Culture & Humanities · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  64. Stamford Dental Society Inc

    EIN 510187702 · Headquarters: Stamford, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  65. Stamford Education 4 Autism Inc

    EIN 208590258 · Headquarters: Stamford, CT, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  66. Stamford Education Association

    EIN 060712064 · Headquarters: STAMFORD, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  67. Stamford Elderly Housing Corporation D/b/a Scofield Manor

    EIN 061083307 · Headquarters: STAMFORD, CT, USA · Housing & Shelter · Latest available filing year: 2024 · Primary form: IRS Form 990

  68. Stamford Emergency Medical Services Inc

    EIN 222757306 · Headquarters: STAMFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  69. Stamford Eruv Inc

    EIN 061086077 · Headquarters: Stamford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Stamford Firefighters Burn Foundations Inc

    EIN 222474792 · Headquarters: Stamford, CT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Stamford Fish and Game Club Inc

    EIN 813782562 · Headquarters: Trumbull, CT, US · Recreation & Sports · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  72. Stamford Garden Club

    EIN 550895904 · Headquarters: Stamford, CT, US · Environment · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  73. Stamford Girls Athletics in Education Inc

    EIN 364679151 · Headquarters: Stamford, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. Stamford Health

    EIN 060646917 · Headquarters: STAMFORD, CT, USA · Health Care · Latest available filing year: 2023 · Primary form: IRS Form 990

  75. Stamford Health Inc

    EIN 222476636 · Headquarters: STAMFORD, CT, USA · Health Care · Latest available filing year: 2023 · Primary form: IRS Form 990

  76. Stamford Health Medical Group

    EIN 271648289 · Headquarters: Stamford, CT, US · Health Care · Latest available filing year: 2023 · Primary form: IRS Form 990

  77. Stamford Health Pharmacy LLC

    EIN 873381961 · Headquarters: Stamford, CT, USA · Health Care · Latest available filing year: 2023 · Primary form: IRS Form 990

  78. Stamford Healthcare Credit Union Inc

    EIN 060991086 · Headquarters: STAMFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  79. Stamford Hellenic Association Inc

    EIN 205648504 · Headquarters: STAMFORD, CT, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  80. Stamford High Football Booster Club Inc

    EIN 273478785 · Headquarters: Stamford, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. Stamford High School Band Parents Association Inc

    EIN 201564958 · Headquarters: STAMFORD, CT, USA · Education · Latest available filing year: 2021 · Primary form: IRS Form 990-EZ

  82. Stamford High School Gridiron Club Ltd

    EIN 882556144 · Headquarters: Stamford, CT, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  83. Stamford Hight School Boys Lacrosse Booster Club

    EIN 861961150 · Headquarters: Stamford, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  84. Stamford Hospital Health Foundation Inc

    EIN 222478748 · Headquarters: Stamford, CT, US · Health Care · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  85. Stamford Iglesia De Dios De La Profecia Inc

    EIN 272829036 · Headquarters: Stamford, CT, USA · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990

  86. Stamford Independent Inc

    EIN 843385083 · Headquarters: Stamford, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. Stamford Indian Community

    EIN 900906130 · Headquarters: Stamford, CT, USA · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  88. Stamford Junior Wrestling Club Inc C/o Politi & Magnifico Llc

    EIN 331196396 · Headquarters: GREENWICH, CT, USA · Recreation & Sports · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  89. Stamford Kiwanis Trust Fund

    EIN 066038976 · Headquarters: Stamford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. Stamford Land Conservation Trust Inc

    EIN 237169603 · Headquarters: Stamford, CT, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  91. Stamford Legion Baseball Inc

    EIN 455595907 · Headquarters: STAMFORD, CT, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  92. Stamford Lighthouse Preservation Society Inc

    EIN 920520169 · Headquarters: Stamford, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  93. Stamford Little League

    EIN 061449574 · Headquarters: STAMFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  94. Stamford Marrow Donor Registry

    EIN 222971050 · Headquarters: STAMFORD, CT, USA · Health Care · Latest available filing year: 2012 · Primary form: IRS Form 990-EZ

  95. Stamford Municipal Nurses Association

    EIN 455279834 · Headquarters: Stamford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. Stamford Museum & Nature Center Inc

    EIN 060653148 · Headquarters: Stamford, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  97. Stamford North Little League

    EIN 472778163 · Headquarters: STAMFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  98. Stamford Old Timers Athletic Association Incorporated

    EIN 352386101 · Headquarters: STAMFORD, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  99. Stamford Paint the Town Pink Inc

    EIN 932834318 · Headquarters: STAMFORD, CT, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  100. Stamford Paramedic Association - Iaep Local 684

    EIN 061445970 · Headquarters: STAMFORD, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

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